Queue

[karatekid]

I can't get the program to dequeue properly. I can't get front to store next
after the current front is deleted. Can anyone help me figure out what I am doing wrong?

[ne555]

template <class T>
int DynIntQueue<T>::dequeue(){
if(front->node==NULL){ //¿ where did you set any value to front->node ?
        front->data=NULL;
        numNodes=0;
        return numNodes;
    }else

[karatekid]

This program was originally for stack and now I am trying to convert it to a queue.

[ne555]

In DynIntQueue constructor you assign front->node=NULL;
After that there is no operation that will change the value of front->node
So

template <class T>
int DynIntQueue<T>::dequeue(){
if(front->node==NULL){ //tautology
        front->data=NULL;
        numNodes=0;
        return numNodes;
    }else{ //never executes
        Node<T> *temp;
        temp=front->node;
        delete front;
        front=temp;
    }
    return --numNodes;
}

There is no coherence between dequeue and enqueue

[karatekid]

What should the if condition be because I get an exception violation when I change the if condition?
Exception: STATUS_ACCESS_VIOLATION at eip=00401F53